Question

Complete the following equations :
(i) $N{a}_2{O}_2+2H_{2}O\to \frac{\left(W\right)}{}+H_2{O}_2$
(ii) $2K{O}_2+2H_{2}O\to \frac{\left(X\right)}{}+\frac{\left(Y\right)}{}+O_2$
(iii) $N{a}_{2}O+C{O}_2\to \frac{\left(Z\right)}{}$

	$W$	$X$	$Y$	$Z$
(a)	$4Na$	$K_{2}O$	$H_{2}O$	$N{a}_2{O}_2$
(b)	$4Na$	$K_{2}O$	$H_2{O}_2$	$N{a}_{2}C{O}_3$
(c)	$4NaOH$	$2KOH$	$H_{2}O$	$N{a}_2{O}_2$
(d)	$2NaOH$	$2KOH$	$H_2{O}_2$	$N{a}_{2}C{O}_3$

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (D)

$N{a}_2{O}_2+2H_{2}O\to \underset{(W)}{2NaOH}+H_2{O}_2$
$2K{O}_2+2H_{2}O\to \underset{(X)}{\mathrm{KOH}}+\underset{(Y)}{H_2{O}_2}+O_2$
$N{a}_{2}O+C{O}_2\to \underset{(Z)}{N{a}_{2}C{O}_3}$